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Learn Exercise 7.10 with Free Lessons & Tips

Evaluate the integrals

When x = 0, t = 1 and when x = 1, t = 2

Comments

Evaluate the integrals

Also, let 

Comments

Evaluate the integrals

Also, let x = tanθ ⇒ dx = sec2θ dθ

When x = 0, θ = 0 and when = 1, 

Takingθas first function and sec2θ as second function and integrating by parts, we obtain

Comments

Evaluate the integrals

Let + 2 = t2 ⇒ dx = 2tdt

When x = 0,  and when = 2, = 2

Comments

Evaluate the integrals

Let cos x = t ⇒ −sinx dx = dt

When x = 0, = 1 and when

Comments

Evaluate the integrals

Let ⇒ dx = dt

Comments

Evaluate the integrals

Let x + 1 = ⇒ dx = dt

When x = −1, = 0 and when x = 1, = 2

Comments

Evaluate the integrals

Let 2x = t ⇒ 2dx = dt

When x = 1, t = 2 and when x = 2, t = 4

Comments

The value of the integral  is

A. 6

B. 0

C. 3

D. 4

Let cotθ = t ⇒ −cosec2θ dθdt

Hence, the correct answer is A.

Comments

If 

A. cos x + x sin x

B. x sin x

C. x cos x

D. sin x cos x

 

Integrating by parts, we obtain

Hence, the correct answer is B.

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